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Demonstrates Belden's comprehensive portfolio of networking and cable solutions, emphasizing their application across diverse industrial and commercial sectors. The content details how Belden's infrastructure supports critical operations, enabling _network resilience_, edge computing, and data interoperability. It highlights tailored solutions for industries such as automotive manufacturing, chemical processing, and data centers, focusing on improving operational efficiency and ensuring uptime. The resource presents case studies and expert insights, demonstrating how Belden's offerings help organizations process data faster and maintain continuous connectivity, even amidst unexpected events. It underscores the company's role in providing robust infrastructure that merges IT and OT worlds, facilitating seamless data flow and informed decision-making across complex environments. The company's global presence is indicated by its **employees globally** and **Great Place to Work Certified countries** metrics.

The CW Decoder program facilitates copying Morse code with a computer, displaying decoded CW as text, and generating a sidetone. It incorporates a spectrum display of the audio, allowing operators to select a specific audio frequency for decoding via a sliding cursor. This utility also enables keyboard-based transmitter keying, supporting full CW break-in operation for efficient QSO management. Developed by WD6CNF, the software is a Windows-compatible application designed to assist amateur radio operators in their CW activities. Its features cater to both decoding received signals and transmitting via keyboard input, streamlining the CW operating experience. Functionality includes real-time audio analysis and signal processing, providing a visual representation of the CW signal. The program's integrated keying capability offers a direct interface for transmitting, enhancing its utility as a comprehensive CW station tool.

Occasionally errors are made regarding core selection. This especially includes baluns, where on occasion some very strange ideas surface.

Exclusive Nello Tower Dealer for Amateur Radio Applications. Nello Tower Corp, makes exact replica Rohn Tower sections and accessories.

A multiband end-fed antenna that cover 3.5 to 30 Mhz using a 1:64 Balun based on a FT240-43 core

Demonstrates CW Decoder Logic, a freeware application for Windows Vista SP2, 7, 8, and 10, designed to decode Morse code signals. The software incorporates an optimized 80 Hz DSP filter, enabling reception of CW signals across a speed range of 5 to 60 WPM. Key features include automatic signal tracking within a 3 KHz range, real-time speed detection, and an auto squelch function, enhancing decoder sensitivity and accuracy. The application provides station selection directly on a waterfall display and includes a "Tips" feature for word annotations. It supports sending decoded text to external logging software via UDP protocol, with a logger source code example provided for developers. Configuration options allow users to set speed limitations and customize interface elements. Released initially on October 17, 2016, with subsequent updates, the program requires Microsoft .NET Framework 4.5 or higher. Changelogs detail improvements such as increased program stability, code optimizations for speed, and fixes for display issues across different Windows versions.

A model of a Guanella 1:1 VHF choke balun using a FT140-61 core

This resource presents over 100 Q-signals, each with its corresponding question and answer format, as standardized by the International Telecommunication Union. The content delineates how these abbreviations can be expanded with additional groups, call signs, place names, or numerical data to provide specific context. It clarifies that a question mark following an abbreviation or its complementary information transforms it into a query. The document highlights that these operating signals, or Op Sigs, are prescribed for international use across all communication types, including military and non-military applications. It references their inclusion in Appendix 9 to the Radio Regulations Annex of the International Telecommunications Convention (Atlantic City) 1947 for QRA to QUZ blocks, and ICAO publications Dec 6100-COM/504/1 for QAA to QNZ blocks. The page specifically marks Q-signals of particular interest to amateur radio operators in red. The utility of Q-signals for concise communication in radiotelegraphy is evident, providing a structured method for conveying complex information efficiently. The resource serves as a practical reference for operators needing to quickly interpret or formulate messages using standardized codes, particularly beneficial for CW operation and international contacts.

NU9N recomendations for processed SSB, ESSB, AM Hi-Fi, Mid-Fi, Amateur Radio Audio Setup for transmiters, receivers and Amateur Radio Recording/Playback

Presents _DirLog_, a freeware logging application specifically developed for the 11-meter CB band, catering exclusively to members of the _Alfa Tango Group_. The software facilitates the recording and management of contacts, providing a dedicated tool for CB operators to maintain their station logs. Its development spans from 1997 to 2025, indicating a long-term commitment to its maintenance and evolution by its author, 1AT069 Enio. This specialized logbook offers features tailored for CB operations, allowing users to track their contacts within the 27 MHz band. While primarily focused on CB logging, its structure and functionality could be compared to amateur radio logging software in terms of data entry and retrieval. The exclusivity to Alfa Tango members suggests a community-specific utility, fostering organized record-keeping among its users.

Coral Springs Police and Fire Dispatch Florida

Presents an online callsign lookup service, QRZ.RU Callbook, which offers a searchable database for amateur radio operators. The resource details its extensive collection, including more than 50,000 records for **CIS (Commonwealth of Independent States)** callsigns and over 1,400,000 international entries. It enables users to search for existing callsign records and facilitates the creation of new entries, contributing to a dynamic and expanding repository of amateur radio data. The platform's primary function is to serve as a **callbook**, providing contact information and other details associated with specific amateur radio callsigns. Access to detailed information within the database is available to registered users, indicating a tiered access model for its comprehensive data. The service is maintained by Sergey, UA9OTY, ensuring a degree of accountability and expertise in its operation.

The 6 Band Inverted L Antenna MK3 is a versatile multiband antenna designed for amateur radio operators. This antenna covers 160m, 80m, 40m, 20m, 15m, and 10m bands, making it suitable for a wide range of HF communications. The design is based on a W3DZZ configuration, incorporating traps for optimal performance. The MK3 version features a sturdy 5/8th CB mast, replacing the original timber mast, which enhances durability against harsh weather conditions. The antenna's construction allows for effective operation, particularly on the 40m band, where it has been successfully used to contact distant locations including ZL, VK, and Antarctica. Constructing this antenna requires careful attention to detail, especially regarding the radials and grounding. The traps resonate at specific frequencies, and additional resources are available for building coaxial traps. The antenna is designed to work efficiently without an ATU on the lower bands, while higher bands may require tuning. This project is ideal for both beginner and intermediate operators looking to enhance their station with a reliable multiband antenna.

Echo Link client for Linux and general purpose voice services system for ham radio use. The svxlink server consists of a core that handles the connection to the tranceiver. The core can be configured to act as a repeater controller or to operate on a simplex channel

Clean up audio files and record high quality audio CD's!

Assorted Grounding Hints and Kinks and Technical Correspondence, Grounding Techniques, Conductivity in the Cold, Cold Ground, Is Your Radio Equipment REALLY Grounded?

Amateur Radio Ham Radio Maidenhead Grid Square Locator Map online. This map allow just a point and click to determine dynamically the correct six characters locator. Other functions allow to calculate the distances among two given locators, or coordinates. Hover over map, specify grid, or enter latitude and longitude to show grid and/or calculate distance. Map is powered by Bing Maps.

Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".

APTDecoder is a free software for recording and decoding signals transmitted by NOAA POES APT enabled weather satellites. It is run on a NT-based version of Window

This Yagi has a constant element-distance of 1,50 m. You must only correct the lengths of the elements for QSY, see table down. For the bands 10 m and 12 m the Yagi is working as a reflector-radiator-Yagi, for 15 m and 17 m as a beam with radiator and director.

Audiocorder is a VOX program which allows your Macintosh to act as an audio recorder

Vsound is a Linux software which allows you to digitally record the output of another program. The recorded output can be saved to a WAV file or can be transferred into another software. It's basically an audio transfer cable software.

This Arduino project decode ICOM CAT frequency information and switch antennas according to preset values. RX and TX antennas can even be different, a project by ON7EQ

Managing extensive amateur radio contact logs efficiently requires specialized software that integrates various operational aspects. Aether provides a macOS-native logging solution, designed from the ground up using Apple's Cocoa, to streamline QSO entry, organization, and retrieval for Mac users. It supports modern macOS technologies and offers an intuitive interface, aligning with the user experience expected on Apple platforms. The application includes features such as automatic dupe checking, which quickly identifies previous contacts with a station, and awards tracking, indicating if a new contact is needed for specific operating awards. Aether also integrates rig control via RS-232, automatically populating frequency, mode, and power data from supported Elecraft, Icom, Kenwood, Yaesu, and some TEN-TEC transceivers. This automation reduces manual entry errors and speeds up the logging process. Furthermore, Aether offers comprehensive QSL management, including synchronization with eQSL.cc and Logbook of The World, and the ability to print QSO detail and address labels for paper QSLs. It also incorporates automatic callbook lookup from sources like QRZ.com and HamQTH.com, and calculates distance and beam heading, with Google Maps integration for visualizing contact locations. Full ADIF and Cabrillo import/export capabilities ensure compatibility with other logging software and contest submission platforms.

MultiKeyer is a dedicated computer keying program designed for amateur radio operators engaging in specialized operating activities such as Earth-Moon-Earth (EME) and Meteor Scatter, as well as general contest operations. It provides distinct modes for both CW and Phone transmissions, enabling automated message sequencing and playback of pre-recorded audio files. The software's interface shares a similar "look and feel" to the popular WSJT Meteor Scatter/EME program, facilitating ease of use for operators familiar with that platform. For CW operations, MultiKeyer offers an EME Auto mode for sending timed messages crucial for EME and Meteor Scatter, alongside a Contest mode that handles automatic CQ calls and preprogrammed messages. On the Phone side, it features a Sequenced Phone mode for transmitting prerecorded .wav files during Meteor Scatter events and an Auto Phone mode for contest use. The program leverages serial COM ports for CW and PTT signaling, and the soundcard for .wav file playback, with configurable PTT interrupt options. MultiKeyer integrates with TRX-Manager for PTT and CW keying, and can send callsigns for logging. It also supports WSJT-style "callsign.txt" files for lookups and adheres to the SO2R protocol for parallel port connections. Designed for Windows 98 and NT, it generally functions on Windows 95, ME, XP, and 2000, requiring a 133 MHz Pentium-class processor.

Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input.

Building coils for a portable dipole using a novel method of winding coils with weedeater cord! By K4MMG

Details the offerings of Ham Buerger Inc., a company founded in 1965 to support the amateur radio community with communications products. The business provides a range of equipment, including Uniden Digital scanners, and maintains a section for equipment blow-out sales that feature professional 2-way radios and cell phones. Additionally, the company stocks hard-to-find NuTone products and provides repair services for most NuTone equipment. The site also references an Amateur Radio Band Plan and links to other ham radio resources, alongside a new product offering for RV and marine toilets, indicating a diversification beyond core amateur radio supplies.

LOGvrr, a **freeware logging software** developed by IN3VRR, provides amateur radio operators with essential tools for managing their contacts. The resource details various downloadable components, including the core LOGvrr application, an international callbook with approximately 1.8 million callsigns, and utility programs for installation and data conversion. It supports functionalities like logging QSOs, managing awards, and interfacing with PacketCluster systems, with specific instructions for installation on Windows operating systems, including compatibility notes for Windows 10 and 11 using Hyper-V or DOSBOX. The site also offers external tools and documentation, such as the FAQ_VRR.PDF manual which covers installation, printer configuration, ADIF conversion, and Packet setup. It references third-party software like Mercurio and BV QSL Management for QSL printing, and ADIF2QSL for label printing, highlighting LOGvrr's ability to export QSOs in **ADIF format** for integration with services like LoTW. The resource includes historical updates, with the latest core component update in August 2014, and notes on the CallBook's maintenance up to 2015.

This resource details the computer-optimized design of the _ZS6BKW_ multiband dipole, an evolution of the classic _G5RV_ antenna. It begins by referencing the original 1958 RSGB Bulletin article by Louis Varney G5RV, explaining the operational principles of the G5RV's flat-top and open-wire feedline on 20m and 40m, noting its impedance transformation characteristics for valve amplifiers of that era. The article then transitions to the rationale for optimizing the design for contemporary solid-state transceivers requiring a 50 Ohm match. The core of the project involves using computer modeling to determine optimal lengths for the flat-top and matching section, aiming for a VSWR of less than 2:1 on multiple HF bands. It discusses the process of calculating feedpoint impedance based on antenna length and frequency, referencing professional literature from Professor R.W.P. King at Harvard University. The analysis also considers the characteristic impedance (Z(O)) of the open-wire line, identifying a broad peak of adequate values between 275 and 400 Ohms. Specific design parameters for the improved ZS6BKW are presented, including a shorter flat-top and a longer matching section compared to the original G5RV, with a velocity factor of 0.85 for the 300 Ohm tape. The article confirms acceptable matches on 7, 14, 18, 24, and 28 MHz bands when erected horizontally at 13m, and also discusses performance in an inverted-V configuration, noting frequency shifts. The author, Brian Austin ZS6BKW, emphasizes the antenna's suitability for modern 50 Ohm coaxial cable without a balun.

Double bazooka antennas

SSTV Fundamentals, frequencies in use for SSTV and many SSTV related infos, includes Fax basics

Windows freeware database containing frequencies, locations, and a small logging program capable or recording audio

LogDDM, a freeware logging application, supports the tracking of over **100** different awards, including _DXCC_, WAZ, and WAS, directly within its interface. This software facilitates comprehensive log management for amateur radio operators, integrating functionalities such as a built-in callbook lookup, real-time packet cluster access, and direct rig control for various transceivers. It also offers robust import and export capabilities, primarily utilizing the ADIF format, which is essential for submitting logs to award sponsors or transferring data between different logging platforms. Developed by Giorgio, IV3DDM, the program is designed to streamline the logging process, allowing hams to efficiently record contacts and manage their QSL information. It provides a centralized hub for operational data, from initial QSO entry to final award application. Key features include detailed QSL management, support for multiple operating modes, and a user-friendly interface, making it a practical tool for daily operating and contest logging.

For radio amateurs engaged in propagation studies and DXing on the 6-meter band, understanding the distribution of active beacons is crucial for assessing band openings and signal paths. This resource presents a static map compiled by _Carl-Axel Lindberg, SM6NZV_, illustrating the geographical placement of European beacons operating on the 50 MHz band, which is vital for monitoring sporadic-E, F2-layer, and other propagation modes. The map, last updated in April 2002, serves as a historical reference for beacon locations, allowing operators to correlate observed signal reports with known beacon positions. While not real-time, it provides foundational data for analyzing past propagation events and understanding typical beacon coverage areas across the European continent. Operators can use this information to identify potential receive stations or transmit points for future _DX contacts_ on the _Magic Band_.

Linux-based amateur radio logging software, _CQRLOG_, integrates a Firebird database for robust data management and offers radio control via _Hamlib_ libraries. It provides essential features for DXers and contesters, including DX cluster connectivity, _QRZ_ callbook lookup, a grayline map, and support for the ON6DP QSL manager database. The application incorporates a country resolution algorithm, developed by OK1RR, which is noted for its accuracy in identifying DX entities. The software's design prioritizes operational ease and maintenance, making it suitable for active logging. Its country resolution algorithm, based on meticulously maintained country tables, aims to minimize errors in DXCC credit. The integration of _Hamlib_ ensures compatibility with a wide array of transceivers, simplifying rig control for various operating modes and contest scenarios.

KWRTTY V1.1.3, released on February 4, 2008, is a freeware RTTY reception program designed for Windows operating systems (Win95 and higher, requiring a minimum 133 MHz Pentium processor and 32 MB RAM). Its primary function is to decode and log amateur radio **RTTY** transmissions, including the capability to set up a private RTTY mailbox that records only messages addressed to the user's callsign. The software is specifically optimized for receiving and logging marine weather reports from the DWD (Deutscher Wetterdienst), categorized by sea areas, making it particularly useful for sport boat operators. The duration of logging is limited only by available RAM. For its core functionality, KWRTTY requires the **MMTTY-Engine** by Makoto Mori, JE3HHT, as an interface between the sound card and the program. This engine, also freeware, needs to be copied into the same directory as KWRTTY. The program's design focuses on continuous logging of specific RTTY content, offering a specialized tool for both general amateur radio RTTY monitoring and dedicated weather report reception, distinguishing it from more general-purpose digital mode software.

The W1TAG LF Receiving Loop is a specialized antenna project for LF reception, designed to mitigate local noise and enhance weak signal pickup on the lower frequencies. This square loop, measuring 6 feet per side, utilizes 14 turns of #12 THHN wire wound on a PVC frame, offering a robust mechanical structure. The design incorporates a series-tuned circuit with a coupling transformer, allowing for tuning from over 400 kHz down to _45 kHz_ using a switched capacitor bank. Construction details include the use of 1.5-inch PVC pipe for the frame, with specific measurements for spreaders and drilled holes for wire threading. The two 7-turn sections of wire are connected at the center, providing an option for a center tap. The loop rotates on a 1-inch steel pipe, enabling directional nulling of noise sources. The tuning unit, housed in a box clamped to the PVC, employs a 1:2 step-up transformer wound on an _FT-82-77 core_ and uses relays to switch capacitance values from 50 pF to 6400 pF, providing precise frequency adjustment. The current setup connects to the shack via 100 feet of RG-58, feeding into a W1VD-designed preamp, with plans for a balanced, shielded twisted pair cable upgrade.

Recorded scanner radio traffic from police and fire department communications. Stockton Police scanner recordings of pursuits, fights, shootings, officer involved shootings, in progress high intensity calls.

The concept of the "Hula Loop" came after many years of building medium wave loops of varying size, shape and performance. Usually these loops are constructed on a square wooden frame, with wire being wrapped around the periphery

Xcorder is a windows Freeware audio recorder written by MM0BFF, designed to work mainly with radio receivers but may be used also in several different ways for audio recording needs.

The Kenwood TH-F6A handheld transceiver can achieve an extended transmit frequency range of 137-174 MHz, 216-235 MHz, and 410-470 MHz by removing a specific diode and chip resistor from the main PCB. This modification also expands the receive range on the A-band to 142-152 MHz, 216-235 MHz, and 420-450 MHz. For the TH-F7E, the transmit range extends to 137-174 MHz and 410-470 MHz, with a corresponding receive range on the A-band. Performing these hardware changes will reset and initialize the radio's memory contents, necessitating prior backup of important channel frequencies. Instructions are provided for constructing a homemade PC programming cable compatible with the Kenwood TH-G71A, TH-F6A, and TH-F7E. The interface utilizes an RS-232-to-logic (0-3.3V) level-shifter and a full-duplex serial connection, adapting the Kenwood PG-4S cable schematic for the TH-G71's 2.5mm and 3.5mm phono plugs. Specific schematic tweaks include changing R1 from 150 ohms to 1K ohm to optimize power from the serial port and adding a 150K ohm resistor between the Radio TXD and ground to manage the 3.3V I/O pin. Detailed plug pinouts for the 2.5mm and 3.5mm connectors are presented, with the interface's TXD connecting to the ring of the 2.5mm plug and RxD to the shield of the 3.5mm plug. Ground connects to the shield of the 2.5mm plug, while the tips of both plugs are no-connects. Debugging procedures cover verifying positive and negative power rails from the serial port, checking component polarities, and testing level-shifting and inversion functions of the interface. Software setup involves enabling "TC ON" (Menu 15 for TH-G71, Menu 9 for TH-F6) and using Kenwood's MCP programming software.

The **ARRL Contest Calendar** presents a detailed schedule of upcoming amateur radio competitions, encompassing both ARRL-sponsored events and significant non-ARRL contests. It provides essential operational details for each entry, such as specific operating periods, eligible bands, and permitted modes, enabling contesters to plan their participation effectively. The resource also links to official rules, soapbox reports, and QST results, offering a comprehensive overview of past and future contest activity. Users can navigate through monthly listings to identify contests of interest, with direct access to detailed information pages for each event. The calendar serves as a central hub for contest operators seeking to confirm dates, understand exchange requirements, and review post-contest analyses. Its utility extends to both seasoned contesters and those new to competitive operating, providing a structured approach to contest participation. The platform integrates various contest-related resources, including links to **Contest Corral** entries for non-ARRL events, ensuring a broad scope of coverage. This aggregation of information streamlines the process of finding contest schedules and associated documentation, making it a practical tool for the amateur radio contesting community.

Custom built amateur radio adjustable antennas and accessories. Screwdriver antennas, antenna controllers

Contest adjudication software scores Cabrillo logs. Auto evaluates up to 2000 logs with duping, claimed score, actual score, cross checking, N-QSO rule, 5-min delta QSO rule. Support including code changes, non-scoring logs troubleshoot and summary output requests.

Surplus and electronics parts. On-line catalog available.

This resource details the construction of a versatile CW/QRSS beacon, designed around a Microchip _PIC16F84_ microcontroller. The project provides a flexible platform for transmitting either standard CW or very slow QRSS signals, making it suitable for LF, VHF, UHF, and SHF applications. It supports two distinct messages, each configurable for speed (from 0 to **127** WPM for CW, or up to **127** seconds per dot for QRSS) and repetition within a six-phase sequence. The core functionality relies on the PIC's EEPROM, which stores all operational parameters, including message content, transmission speeds, phase configurations, and relay control settings. This design allows for parameter modification directly via programming software like _ICProg_ without altering the main program code. The project includes a detailed schematic, a component list, and an explanation of the EEPROM memory mapping for messages, speeds, phase settings, and inter-phase delays. General-purpose outputs (OUT1, OUT2, OUT3) provide dry relay contacts for external control, enabling functions such as power switching, antenna selection, or frequency changes. A 'TRIGGER' input facilitates controlled starts or continuous free-run operation. Sample EEPROM configurations illustrate how to program specific beacon sequences, including message content and relay states.

Illustrates the specific wiring and configuration steps required to interface an SGC-230 Smartuner with an Icom IC-706 HF/VHF/UHF transceiver. The document details the necessary connections for power, control, and RF signal paths between the two devices, ensuring proper impedance matching and automatic antenna tuning functionality. It specifies the pin assignments for the IC-706's ACC socket and the SGC-230's control port, crucial for successful integration. Outlines the operational considerations for the combined system, including initial setup procedures and potential troubleshooting tips for common connectivity issues. The resource presents a clear, diagrammatic representation of the interconnections, which aids in visual comprehension of the required cable fabrication or modification. Covers the specific settings within the IC-706 menu that need adjustment to enable external tuner control, such as the 'TUNER' function and other relevant parameters. This ensures the transceiver correctly communicates with the SGC-230 for efficient antenna tuning across various amateur bands.

About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

Some antenna manufacturers place baluns at the incorrect location in LPDA arrays, or tell you to route the cable incorrectly. This can cause substantial RFI and all sorts of weird problems like RF into house wiring.